Alkaline albumose-silver compound.



UNITED STATES PATENT OFFICE.

GEORG WIGHMANN, OF BERLIN, GERMANY, ASSIGNOR T0 CHEMISCHE FABRIK AUFACTIEN, (VORM. E. SOHEBINGJ 0F BERLIN, GERMANY.

ALKALINE ALBUMOSE-SILVER COMPOUND.

No Drawing.

Specificationof Letters Patent.

Patented Sept. 5, 1911.

Application filed March 18, 1909. Serial No. 484,268.

TI '0 all whom it may concern:

Be it known that I, G-uouo \YIUHMANN, doctor of philosophy, chemist,citizen of the German E111 "re, residing at Berlin, King (lOl'l'l ofPrussia, Gcrmai'i Empire, have invented a new and useful .ll'nn'oveincnt in Alkaline Albiunosc-Silver Compounds, of which thefollowing is a specification.

I have discovered that when the double compounds obtained from silversalts and such organic bases as are not corrosive and tonic, such asethylenediamin, pipcrazin and the like, are acted upon OYiLlbUIXIOSGS.easily soluble alkaline albuniose silver com pounds are obtained.

The albiunose employed for the production of this new compound is thatwhich is obtained by the action of a digestive ferment, such as pepsinor pancreatin, or a suitable acid, or superheated water upon at buinenwhich is derived from meatand soluble in water.

In order to obtain the new albumose silver compounds,-the aqueoussolution of the albumoscs is mixed with a solution of the doublecompound of a' silver salt and an organic base, the solution being thenevaporated or precipitated by the addition of alcohol or other suitableagent.

Ema mp les.

1. Silver nit rote cthyZenediam-n albumosc.--11.4 grams albui'nose aredissolved in 25 grams of water and mixed with 16.4 cubic centimeters ofsilver nitrate ethylenediamin solution (known as argentamin). Themixture being then evaporated to dryness in cameo. The product obtainedconmose.-Silver phosphate (obtained by preeipitating with so umphosphate from an ad ueous solution containing 2 grams of silver nitrateand then washing) is mixed with some water and dissolved by the additionof about .Z-cubic centimeters of ethylened1ain1n, to the filteredsolution is added 8.8 grams albumose mixed in a little water.

The evaporated. compound contains 10.7%

silver.

4.. Silver nitrate p-ipemcin albumo-see A concentrated aqueous solutionof 23} grains silver nitrate is poured into a solution of 5.1. gramspiperazin (50%) in 15 cubic centimeters water and mixed with 11 grainsalbumosc in 30 cubic centimeters water. A

product containing 9.8% of silver is ob tained by evaporating thismixture in cam/.0.

In place of employing the solution of a double compound. of a silversalt and an organic base the compound may be isolated as a solid andthen employed for the menu facture of albumose compounds.

.Fo' the production of these solid compount s the silver salt preferablyemployed in the form. of a line powder, or dissolved in a lit tle Wateror alcohol, and introduced into 'precipitate with the solutions of thenew silver compounds. Dilute acids such as acetic acid,hydrochloricacid, nitric acid;

sulfuric acid give precipitates which however again dissolve in largeexcess of acid.

I claim as my invention:

1. The herein (lQSCIll'I'Bd alkaline albumose silver compounds obtainedfrom the action of albumose which is soluble in water and derived frommeat albumen upon a silver salt and an organic base which is notcorrosive or toxic, such compounds be mg brownish powders which arereadily.

soluble in water with an alkaline reaction, do not give a precipitatewlth sllver re- The resulting compound is The antiseptic power of;

agents, carbonize upon heating, and from which the organic base isdriven off by distillation.

2, The herein described silver salt-ethylenediamin-albumose compounds,being brownish powders which a're readily solublein water with analkaline areaction, do not give a precipitate with silver reagents,carbonize upon heating, and from which the organic base is driven off bydistillation.

3. The process of manufacturing alkaline albumose silver compounds whichconsists in causing albumose which is soluble in water and derived frommeat albumen to act upon a double compound comprising a silver salt anda non-corrosive, non-toxic organic base, substantially as described.

4. The process of manufacturing silver salt ethylenediamin albumosecompounds, which consists in causing albumose which is hand in thepresence of two subscribing witnesses.

GEORG WIOHMANN. Witnesses:

HEnnY' HASPER, WOLDEMAR HAUPT.

